General Information

Event name: US-22-002
Nature of the harmful event:
High Phyto concentration , Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 49 - 200 ppm)
Associated syndrome: ASP
Unexplained toxicity: No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: Yes (Oregon Department of Agriculture annual biotoxin monitoring program for molluscan shellfish)
Event occurred before in this location: Yes (Occurs regularly)
Individuals to contact: Manderson, Alex

Location & Date

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Location: Latitude: , Longitude:
General location information: Oregon Coastline,
HAB Area code(s): US-22
Additional location information:
Bloom event dates (yyyy/mm/dd): Start: 2022-01-01,
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: The bloom continued into 2023


Causative organism known: Yes
Causative Species/Genus: Pseudo-nitzschia spp. ( cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography:

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity:
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column:
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Razor Clams Domoic Acid DA 200 ppm LC
Dungeness Crab viscera Domoic Acid DA 58 ppm LC
California Mussels Domoic Acid DA 49 ppm LC
Kit used: Type of kit used:
Additional information:
Economic losses: Significant economic losses with loss of tourism and the delay of a profitable fishery.
Management decision: The recreational razor clam fishery was closed all year and the Dungeness Crab fishery was delayed.
Additional harmful effect information:
Created at 07:18 on 31 Mar 2023